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High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
Published on: September 30, 2022
Iodine K-edge-enhanced and high-energy imaging using a high-spatial-resolution dual-energy photon-counting x-ray
Jiro Sato1,2, Eiichi Sato3, Reina Sato4
1Department of Clinical Oncology, Toho University Graduate School of Medicine, 5-21-16 Omorinishi, Ota, Tokyo 143-0015, Japan.
None:
To sequentially perform iodine (I) K-edge-enhanced and high-energy imaging, we conducted high-spatial-resolution dual-energy photon-counting x-ray computed tomography (PCCT). X-ray photons transmitted through the object were detected using a cadmium telluride flat panel detector, and 720 radiograms were sent to a personal computer to reconstruct 256 tomograms. For I-K-edge-enhanced CT, x-ray photons with energies ranging from 33 to 70 keV were selected. Subsequently, high-energy CT in the 60-100 keV range was performed to reduce metal artifacts and to compare the results with those from I-K-edge CT. Using this cone-beam PCCT scanner, the effective pixel dimensions were 80 × 80 μm2, and fine coronary arteries in a dog-heart phantom were observed at high contrast with I-K-edge CT. In addition, high-energy CT reduced the metal artifact caused by a 0.1-mm-diameter hairpin-shaped tungsten wire.
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